"To my mind the taking some expression of a Judge used in deciding a question of fact as to his own view of some one fact being material on a particular occasion, as laying down a rule of conduct for other Judges in considering a similar state of facts in another case, is a false mode of treating authority. It appears to me that the view of a learned Judge in a particular case as to the value of a particular piece of evidence is of no use to other Judges who have to determine a similar question of fact in other cases where there may be many different circumstances to be taken into consideration."